Globe-valve



' (N o Model.)

J. CHRIST.

GLOBE VALVE.

.No. 258,019. Patented May 16, 1882.

,Figd. I

' Lzuenim 0 .4w 0M0:

- Wiijmm 1 UNITED STATES PATENT OFFICE.

JOHN CHRIST, OF HOBOKEN, NEW JERSEY.

GLOBE-VALVE.

SPECIFICATION forming part of Letters Patent No. 258,019, dated May 16,1882.

a Application filed November 11, 1881. (No model.)

To all whom it may concern:

Be it known that I, JOHN GHaIsr, of the city of Hoboken, county ofHudson, and State of New Jersey, am the inventor of an Improved Valve,of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming part of thisspecification.

My invention relates to a valve of that de scription known asglobe-valves, and more particularly to such a valve designed for use incontrolling the flow or passage of volatile gases; and it consists in avalve having the ports or passages through it of the peculiar formhereinafter described, together with a head and stem, the latterprovided with astuffing-box constructed and arranged to operate ashereinafter more at length set forth.

Figure l is a vertical central sectional view of a valve embodying myinvention, and showingthe parts in position to close the valve and Fig.2 is a similar view of the same, showing the valve open.

A is the valve-body, and a is the entranceport through which the gas orother matter enters into the valve-body, said entrance-port being formedas shown in the drawings-that is, leading in from one sideof the bodyand opening into a chamber, 09, in the upper part of which is theopening a which is designed to be opened and closed by the valve-head.At a is a chamber communicated to by the opening a from the chamber aand in which the valve-head moves; and a is the exit-port leading fromthe chamber or out of the valvebody.

B is the valve-head, the under face of which has the annular channel b,furnished with suitable packing, which closes down upon the projectingneck a of the opening a The head B is attached to the stem 0 in thefollowing manner: The head is centrally recessed from its upper side,and into this recess b the end of the stem is passed, said end havingthe flange b and rests upon the convex upper face of a disk, 11*, whichis placed at the bottom of said recess, as shown. A screw-cap, D, havinga central opening, at, is slipped upon the valvestem and is screwed downinto the recess in the head, said recess being threaded to receive it,the lower edge of said cap abutting upon the shoulder of the flange b ofthe stem. A lock-pin, d, may be used to hold the cap firmly in place.The upper edge of the cap D has an annular flange, (P, the under face ofwhich is channeled or grooved and suitably packed to form a gas-tightjoint between said face and the upper edge or rim of the head. The upperface of the cap D has an annular projection, (Z arranged to enter orengage, when the valve is opened by the raising of the head, a similargroove or channel, 61 in the upper wall of the chamber a about thethreaded opening through which the valve-stem extends, said groove orchannel being furnished with suitable packing.

E is a stuffing-box, which is bolted upon the valve-body, and through itthe stem G ex-.

tends to the exterior of the valve, where it is provided with thehand-wheel c, as shown.

The centralopening, d, of the cap D, through which the stem passes, ismade somewhat conical, as shown in the drawings, and by means of thisconstruction, together with the convex disk b upon which the end of thestem works in the head, sufficient play is given to the head upon thestem to enable it to seat itself firmly and form a gas-tight joint,either on the opening a when the head is lowered to close the valve orin the groove d about the stem when the head is raised to open thevalve.

The purpose of my invention is'to provide a valve which shall be capableof furnishing a gas-tight joint at the valve-seat when the valve isclosed, and also to prevent the escape of gas by the opening throughwhich the valvestem passes out from the valve-body when the valve isopened. .It is evident that when the valve 1 describe is closed the headwill seat itself firmly upon the opening or gate a and that when it isopened-the escape of gas by the opening through which the stem passeswill be effectually prevented by the gas-tight joints at d and 01 aswell as by the stuffing' box E.

What I claim as my invention, and desire to secure by Letters Patent,is-'- Ina globevalve having the body A, with ports and chambers,substantially as described,

about the stem 0 when the valve is opened, as and for the purposespecified.

J. CHRIST.

Witnesses:

P. M. CUSHING, S. J. WAINWRIGHT, Jr.

